BMW 5 Series Gran Turismo (2015) is 567 mm (22.32 inch) longer and 79 mm (3.11 inch) wider than BMW X1 (2017).
BMW X1 (2017) is 39 mm (1.54 inch) higher, 660 kg (1,455 lbs) lighter and has 5 liters (0.18 ft3) bigger cargo space than BMW 5 Series Gran Turismo (2015).